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Marage 250

Favorite Datasheet
A 646 Grade Marage 250 Marage 250
#Marage-250

Description

USA ASTM SAE AMS 6512G (2012), Marage 250 Specialsteel Steel, Bars, Forgings, Tubing, and Rings 18Ni - 7.8Co - 4.9Mo - 0.40Ti - 0.10Al Consumable Electrode Vacuum Melted, Annealed and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Specialsteel: Marage 250
Category Class Grade Type Standard Country Application
Steel GradesSpecialsteel Marage 250 Precipitation-Hardening ASTM USA Steel, Bars, Forgings, Tubing, and Rings 18Ni - 7.8Co - 4.9Mo - 0.40Ti - 0.10Al Consumable Electrode Vacuum Melted, Annealed

Chemical composition(mass fraction)(wt.%) of the Marage 250

C Si Mn Ni Cr Al Cu Ti Fe Mo Co
≤0.03 ≤0.10 ≤0.10 ≤18.00 ≤ ≥ ≤0.10 ≤ ≥ ≤0.40 ≤ ≥ ≤5.00 ≤8.00

Mechanical Properties of steel grade Marage 250

Yield
Rp0.2 (MPa)		 Tensile
Rm (MPa)		 Impact
KV/Ku (J)		 Elongation
A (%)		 Reduction in cross section on fracture
Z (%)		 As-Heat-Treated Condition Brinell hardness (HBW)
429 (≥) 797 (≥) 33 33 12 Solution and Aging, Annealing, Ausaging, Q+T,etc 433

Physical Properties of steel grade Marage 250

Temperature
(°C)		 Modulus of elasticity
(GPa)		 Mean coefficient of thermal expansion 10-6/(°C) between 20(°C) and Thermal conductivity
(W/m·°C)		 Specific thermal capacity
(J/kg·°C)		 Specific electrical resistivity
(Ω mm²/m)		 Density
(kg/dm³)		 Poisson’s coefficient, ν
21 - -     0.22 -  
636 721 - 41.3 114   -  
381 - 42 44.2   413 213

Heat Treatment of steel grade Marage 250

Heat treated : 1966°C - 1116°C

Technological Curves of steel grade Marage 250

Relevant standard of Marage 250

SAE AMS 6512G (2012) Steel, Bars, Forgings, Tubing, and Rings 18Ni - 7.8Co - 4.9Mo - 0.40Ti - 0.10Al Consumable Electrode Vacuum Melted, Annealed SAE-AMS-6512G-(2012).pdf
A 646 Grade Marage 250 Marage 250
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